SGS 6mm Ser 20-Ccr E/C Carbon Fibre Router Series 20-CCR Carbon-Fiber Composite Routers are designed for aerospace cutting applications. Reduces fiber breakout in carbon-fiber reinforced polymer materials used in the manufacture of aerospace components. The unique flute structure provides longer tool life and requires less cutting force. Designed for carbon-fiber composites Longer tool life Less cutting force Reduces delamination ? Available with and without end cut ? Both fractional and metric cutting diameters Cutter diameter 1/4" Shank diameter 1/4" Flute length 1" Overall length 2 1/2